Cal. Ins. Code § 770
No person engaged in the business of financing the purchase of real or personal property or of lending money on the security of real or personal property and no trustee, director, officer, agent or other employee, or affiliate of, any such person shall require, as a condition precedent to financing the purchase of such property or to loaning money upon the security thereof, or as a condition prerequisite for the renewal or extension of any such loan or for the performance of any other act in connection therewith, that the person for whom such purchase is to be financed or to whom the money is to be loaned or for whom such extension, renewal or other act is to be granted or performed negotiate any insurance or renewal thereof covering such property through a particular insurance agent or broker.
Ca. Ins. Code § 770